Hubrecht, Prof., ii. 80; alleges differences between Darwin and Wallace, 87 Hudson's "Scientific Demonstration of a Future Life," ii. 203 Huggins, Sir W., and psychical research, ii. 198, 199 Hughes, Hugh Price, Wallace's opinion of, ii. 204 ---- letter from, on Wallace's "Justice, not Charity," ii. 157 Humboldt's "Personal Narrative," i. 17, 164, 238 Humming-birds, ii. 23, 24 Huxley, T.H., i. 1, 5, 76, 116, 137; meets Wallace, 35; appreciation of Wallace, 94; first interview with Darwin, 104; and Herbert Spencer, 123; and the memorial to Gladstone as to a pension for Wallace, 313; and psychical research, ii. 198; opinion as to Wallace joining Royal Society, 220; on Henslow, 251 ---- letters from, declining Wallace's invitation to investigate "curious phenomena," ii. 187-8 Hybrids, sterility of, i. 130, 195 _et seq._; and Natural Selection, 195 _et seq._; infertility of, 297 Hyder, Mr. J., ii. 161, 252 Hyndman, Mr. H.M., letter from, acknowledging Wallace's birthday congratulations, ii. 164 I "Ice-Marks in North Wales," Wallace's, i. 177 "Illustrations of British Insects," i. 23 (note) "Immigration of Norwegian Flora," Blytt's, i. 293 Immortality, Wallace's views on, ii. 176 Indian Mutiny, i. 68 Indians, American, Bates's opinion of, ii. 29 Individual adaptability and natural selection, ii. 55 "Insectivorous Plants," Darwin's, i. 284, 285, ii. 2 Insects, migration of, Lyell on, ii. 19; theory of flight, 26 Instinct, Archdall Reid's views of, ii. 67 "---- in Man and Animals," Wallace's, ii. 6 "Introduction to Study of Natural Philosophy," Herschel's, i. 17 "Is Mars Habitable?" Wallace's, ii. 172 "Island Life," Wallace's, i. 42, 305, 306-7, ii. 5, 12-14, 32, 33, 72, 75 Islands, continental, i. 305, ii. 12 ---- oceanic, i. 138, 210-12, 305, ii. 12 J Jameson's lectures on geology and zoology in Edinburgh, i. 16 Janet's "Materialism of the Present Day," i. 170, 172, 173, 175 Jardine, Sir W., criticism of "Origin of Species," i. 142 Java, birds of, i. 87; flora of, 86; mountains of, 85-6; volcanoes of, 85, 86 Jencken, Mrs., ii. 198 Jenkin, Fleeming, on limitations to variation, i. 190; Darwin on, 233, 234; Wallace on, 234 Jensen and De Rougemont, ii. 76 Jessopp, Rev. Augustus, letter on land nationalisation, ii. 157 Joan of Arc, works on, ii. 204 Jones, Sir Rupert, on Miocene or Old Pliocene Man in India, ii. 62 ---- Mr. W. Braunston, birthday ode by, ii. 248 Jordan, Mr., ii. 129 Josiah Mason College, Birmingham, Wallace and, i. 306 "Journal of Researches," Darwin's, i. 18, 25, 37, 43 Judd, John W., and Wallace medallion, ii. 253 Jukes, J.B., a supporter of Darwin, i. 141 K Kane, Mrs., ii. 198 Keltie, Dr. J. Scott, on Wallace's exploration in Brazil, i. 29 Kelvin, Lord (_see_ Thomson, Sir W.) Kempe, Sir A.B., signs petition for Wallace memorial, ii. 253 Keyerling and the Darwinian theory, i. 141 Kidd, Mr. Benjamin, and "equality of opportunity," ii. 158